I have been using VS 2015 and like the Class Diagram item. I recently upgraded to 2017 and can\'t seem to find the Class Diagram item. Anyone know how I get to it?
You need to install “Visual Studio extension development” workload and “Class Designer” optional component from the Visual Studio 2017 Installer to get the feature.
See: Visual Studio Community 2017 component directory
But this kind of item is not available on all project types. Just try for yourself:
In a Console App (.NET Framework) is available;
In a Console App (.NET Core) is not available.
I couldn't find more info on future availability also for .NET Core projects.